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| author |   Josef Bacik <josef@toxicpanda.com> | 2019-08-22 15:10:56 -0400 |
|---|---|---|
| committer |   David Sterba <dsterba@suse.com> | 2019-09-09 14:59:17 +0200 |
| commit | a43c383574d80503f3ba9cd08de16dad2590ca1b (patch) | |
| tree | 1370017788e063b80396ba1c2f9e7e39f5a1dfd2 /fs | |
| parent | btrfs: roll tracepoint into btrfs_space_info_update helper (diff) | |
| download | linux-dev-a43c383574d80503f3ba9cd08de16dad2590ca1b.tar.xz linux-dev-a43c383574d80503f3ba9cd08de16dad2590ca1b.zip | |
btrfs: add space reservation tracepoint for reserved bytes
I noticed when folding the trace_btrfs_space_reservation() tracepoint
into the btrfs_space_info_update_* helpers that we didn't emit a
tracepoint when doing btrfs_add_reserved_bytes(). I know this is
because we were swapping bytes_may_use for bytes_reserved, so in my mind
there was no reason to have the tracepoint there. But now there is
because we always emit the unreserve for the bytes_may_use side, and
this would have broken if compression was on anyway. Add a tracepoint
to cover the bytes_reserved counter so the math still comes out right.
Signed-off-by: Josef Bacik <josef@toxicpanda.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/btrfs/block-group.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/fs/btrfs/block-group.c b/fs/btrfs/block-group.c index d61aa94884f0..bf7e3f23bba7 100644 --- a/fs/btrfs/block-group.c +++ b/fs/btrfs/block-group.c @@ -2758,6 +2758,8 @@ int btrfs_add_reserved_bytes(struct btrfs_block_group_cache *cache, } else { cache->reserved += num_bytes; space_info->bytes_reserved += num_bytes; + trace_btrfs_space_reservation(cache->fs_info, "space_info", + space_info->flags, num_bytes, 1); btrfs_space_info_update_bytes_may_use(cache->fs_info, space_info, -ram_bytes); if (delalloc) |